9 CFR § 146.31 - Definitions.
---
identifier: "/us/cfr/t9/s146.31"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "9 CFR § 146.31 - Definitions."
title_number: 9
title_name: "Animals and Animal Products"
section_number: "146.31"
section_name: "Definitions."
chapter_name: "ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE"
subchapter_number: "G"
subchapter_name: "LIVESTOCK IMPROVEMENT"
part_number: "146"
part_name: "NATIONAL POULTRY IMPROVEMENT PLAN FOR COMMERCIAL POULTRY"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "7 U.S.C. 8301-8317; 7 CFR 2.22, 2.80, and 371.4."
regulatory_source: "71 FR 56328, Sept. 26, 2006, unless otherwise noted."
cfr_part: "146"
---
# 146.31 Definitions.
*Meat-type chicken.* A domesticated chicken grown for the primary purpose of producing meat, including but not limited to broilers, roasters, fryers, and cornish.
*Meat-type chicken slaughter plant.* A meat-type chicken slaughter plant that is federally inspected or under State inspection that the Food Safety Inspection Service has recognized as equivalent to federal inspection.
*Shift.* The working period of a group of employees who are on duty at the same time.
*Spent fowl.* Domesticated poultry that were in production of hatching eggs or commercial table eggs and have been removed from such production.
[71 FR 56328, Sept. 26, 2006, as amended at 79 FR 38766, July 9, 2014]